No, I haven't been tagged, a phenomenon seemingly started by Jeff Pulver, although there are hints that he was at least inspired by an existing wave of the game.
But, I note it as another challenge for all those blogosphere/social network analysis/search/social media hackers and researchers out there. Show me the shape of this blog tag network (tree?) and give me a picture of its dynamic growth. All the data's out there! This one'e even easier in that folks are putting explicit links in their posts.